Eggs can be stuffed ahead of time. Refrigerate up to 2 days before serving.
How to Hard Cook Eggs
Place eggs in single layer in saucepan; add enough water to completely cover eggs by at least 1 inch. Bring water boil; cover. Remove saucepan from heat; let stand 15 min. Drain eggs; immediately place in bowl of ice water. Let stand until completely cooled, changing water if necessary. Perfectly hard-cooked eggs will have a firm yellow center with no greenish tinge. Hard-cooked eggs in their shells can be refrigerated for up to 1 week.